CVE Catalog

CVE-2026-82271

MediumCVSS 6.5
Published: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.22%

12th percentile - higher than 12% of all known CVEs

Summary

R2R through 3.6.5 fails to properly validate user ownership in conversation update and message handlers, allowing authenticated users to modify other users' conversations. Attackers can supply arbitrary conversation identifiers to rename conversations and append messages to other users' conversation histories, corrupting state and injecting malicious content.

Risk Assessment

Risk of data integrity violation and user trust erosion, as an attacker can manipulate other users' conversations, potentially leading to misinformation or privilege escalation.

Recommendation

Update R2R to the latest version that includes the ownership validation fix. Additionally, implement tests for object-level authorization.

Related vulnerabilities

Original NVD description (English source)

R2R through 3.6.5 fails to properly validate user ownership in conversation update and message handlers, allowing authenticated users to modify other users' conversations. Attackers can supply arbitrary conversation identifiers to rename conversations and append messages to other users' conversation histories, corrupting state and injecting malicious content.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS